Help me understand some hostNotificationUSBDeviceRemoved events I found in the wifi.log

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Help me understand some hostNotificationUSBDeviceRemoved events I found in the wifi.log

Device : MacBook Pro (2020) - Ventura 13.2.1

Mar  7 00:40:11 192 newsyslog[79818]: logfile turned over
Tue Mar  7 01:29:35.967 Usb Host Notification hostNotificationUSBDeviceRemoved Apple Internal Keyboard / Trackpad(unseen product name) seqNum 394 Total -86
Tue Mar  7 01:29:35.990 Usb Host Notification Apple80211Set: seqNum 394 Total -86 chg 0 en0
Tue Mar  7 03:29:46.661 Usb Host Notification hostNotificationUSBDeviceRemoved Apple Internal Keyboard / Trackpad(unseen product name) seqNum 395 Total -87

These events occurred in the night (closed lid at around midnight, hoping it went to sleep mode) I don't have any usb devices attached.

Posted on Mar 7, 2023 4:26 AM

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Answer 1

etresoft

Level 9

56,212 points

Mar 7, 2023 4:39 AM in response to hamzaobd

It says right there what USB device was involved - the Apple Internal Keyboard. That’s just log noise. Ignore it.

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Answer 2

etresoft

Level 9

56,212 points

Mar 7, 2023 7:35 AM in response to hamzaobd

Apple doesn't document what happens during sleep mode. That stack overflow link is just quoting an obsolete Apple Support document, which itself was only a consumer-level document and may not have been accurate. Perhaps that's why the information was removed.

Regardless, the USB bus regularly gets reset. That's why you shouldn't attempt to boot from it if you don't have to.

You also shouldn't look at log files. I've seen more than one person literally lose their minds doing that. Hundreds of messages every second. Some with cryptic, scary, or bizarre text. And it never, ever ends. No matter how many hours you stare, the messages never stop.

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Answer 3

hamzaobd Author

Level 1

5 points

Mar 7, 2023 4:53 AM in response to etresoft

I will I just wanted to know why the disconnect event was generated, I thought sleep mode is like hibernate(safe sleep). this answer on stackexchange explains what happens when Mac goes to sleep and some events that may trigger that. still I want understand how

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Answer 4

hamzaobd Author

Level 1

5 points

Mar 8, 2023 2:25 AM in response to etresoft

"You also shouldn't look at log files." this was literally a great part of my previous job ^^

"I've seen more than one person literally lose their minds doing that.". Funny I already lost my mind ^^

Thanks for taking the time to answer me :)

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Answer 5

etresoft

Level 9

56,212 points

Mar 8, 2023 4:28 AM in response to hamzaobd

hamzaobd wrote:

"You also shouldn't look at log files." this was literally a great part of my previous job ^^

You’re working with Apple now. Apple doesn’t specify which log messages are important and which are what it defines as “log noise”.

"I've seen more than one person literally lose their minds doing that.". Funny I already lost my mind ^^

I don’t find it particularly funny seeing people in mental distress.

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Help me understand some hostNotificationUSBDeviceRemoved events I found in the wifi.log

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